CN114312008A

CN114312008A - Head lifting device, control method and manufacturing method thereof, and storage medium

Info

Publication number: CN114312008A
Application number: CN202111130403.4A
Authority: CN
Inventors: 青木毅; 天野祐作
Original assignee: Seiko Epson Corp
Current assignee: Seiko Epson Corp
Priority date: 2020-09-29
Filing date: 2021-09-26
Publication date: 2022-04-12
Anticipated expiration: 2041-09-26
Also published as: EP3974199B1; CN114312008B; EP3974199A1; US20230278355A1; JP2022055704A; US20220097430A1

Abstract

The invention relates to a head lifting device, a control method and a manufacturing method thereof, and a storage medium. Provided are a head lifting device capable of easily adjusting the position of a liquid ejecting head in a plurality of directions, a control method and a program for the head lifting device, and a manufacturing method for the head lifting device. The disclosed device is provided with: an elevating mechanism (44) for moving a liquid ejecting head that ejects liquid in a first direction in which the liquid ejecting head is elevated; a frame (45) that supports the lifting mechanism (44); and an adjustment member (46) that moves the lifting mechanism (44) relative to the frame (45) in a second direction that is different from the first direction.

Description

Head lifting device, control method and manufacturing method thereof, and storage medium

Technical Field

The invention relates to a head lifting device, a control method of the head lifting device, a program, and a manufacturing method of the head lifting device.

Background

For example, as disclosed in patent document 1, there is a recording apparatus as an example of a head lifting device that adjusts the position of a recording head as an example of a liquid ejecting head. The recording head is provided so as to be movable in the Z direction while being positioned in the X direction and the Y direction with respect to the through reference hole. The Z direction is a direction perpendicular to the surface on which the ink lands. The recording head is moved up and down with respect to the surface on which the ink lands, thereby adjusting the interval with the medium.

Patent document 1: japanese patent laid-open No. 2020 and 49788

Such a recording head can adjust the position in the direction perpendicular to the surface on which the ink lands, but is difficult to adjust the position in other directions.

Disclosure of Invention

A head lifting device for solving the above problems comprises: a lifting mechanism for moving a liquid ejecting head that ejects liquid in a first direction in which the liquid ejecting head is lifted; a frame supporting the lifting mechanism; and an adjustment member that moves the lifting mechanism in a second direction different from the first direction with respect to the frame.

A method of controlling the head lifting device, the lifting mechanism having a movable rail that is movable relative to the frame and a fixed rail that is fixed to the frame, the method comprising: a first moving step of moving the liquid ejecting head along the fixed rail; and a second moving step of moving the liquid ejecting head along the movable rail continuously with the first moving step.

A program for causing a computer to execute the method for controlling the head lifting device.

A method of manufacturing the head lifting device includes: an adjustment step of moving the lifting mechanism in the second direction with respect to the frame; and a mounting step of mounting the liquid ejecting head to the elevating mechanism after the adjusting step.

Drawings

Fig. 1 is a schematic diagram of an embodiment of a liquid ejection device.

Fig. 2 is a schematic view of a liquid ejection head.

Fig. 3 is a schematic view of the head lifting device.

Fig. 4 is a cross-sectional view taken along line 4-4 of fig. 3.

Fig. 5 is a cross-sectional view taken along line 5-5 of fig. 3.

Fig. 6 is a schematic view of the head lifting device for positioning the liquid ejecting head at the second printing position.

Fig. 7 is a schematic view of a first movable rail and a first fixed rail.

Fig. 8 is a schematic cross-sectional view of the first movable rail in the first rail adjustment position.

Fig. 9 is a schematic cross-sectional view of the first movable rail in the second rail adjustment position.

FIG. 10 is a schematic cross-sectional view of the first shaft in a first shaft adjustment position.

FIG. 11 is a schematic cross-sectional view of the first shaft in a second shaft adjustment position.

Fig. 12 is a schematic view of a head lifting device that caps a liquid ejection head.

Fig. 13 is a schematic view of the head lifting device for positioning the liquid ejecting head at a distant position.

Fig. 14 is a schematic view of the head lifting device for positioning the liquid ejection head at the wiping position.

Description of the reference numerals

11: a liquid ejecting device; 12: a housing; 12 a: a front face cover; 13: a medium; 14: a medium storage section; 15: a feeding section; 16: a conveying path; 17: a conveying section; 18: a stacker; 19: a liquid ejection head; 19 a: a nozzle face; 20: a head lifting device; 21: a cover; 23: a feed roller; 24: a separation section; 26: a conveying roller; 27: a conveyor belt; 27 a: a conveying surface; 28: a pulley; 30: a nozzle; 32: a control unit; 34: a front surface; 35: a first front protrusion as an example of the protrusion; 36: a second front protrusion as an example of the protrusion; 37: a rear surface; 38: a first rear protrusion as an example of the protrusion; 39: a second rear protrusion as an example of the protrusion; 40: a side surface; 41: a lateral protrusion; 43: a wiper; 44: a lifting mechanism; 45: a frame; 46: an adjustment member; 48: a front wall; 48 a: a first support section; 48 b: a second support portion; 49: a rear wall; 49 a: a through hole; 50: a beam; 52 a: a first screw as an example of the screw; 52 b: a second screw; 52 c: a third screw as an example of the screw; 54: a guide rail; 54 a: a front guide rail; 54 b: a rear guide rail; 56: a first shaft; 57: a cam; 58: a second shaft; 59: a drive gear; 61: a rack; 62: a spring; 64: a first rear guide section as an example of a reference member; 65: a second rear guide portion; 67: a first front guide portion; 68: a second front guide portion; 70: a first movable rail as an example of the movable rail, the movable member, and the reference member; 70 a: a first end; 70 b: a second end; 71: a first fixed rail as an example of the fixed rail; 71 a: a third end; 72: a second movable rail as an example of the movable rail and the movable member; 73: a second fixed rail as an example of the fixed rail; 75: a movement path; 76: an upper wall; 77: a lower wall; 79: a first virtual line as an example of the virtual line; 79 a: a first line segment; 79 b: a second line segment; 79 c: a third line segment; 81: a first endpoint; 82: a second endpoint; 84: a second virtual line; 84 a: a fourth line segment; 84 b: a fifth line segment; 84 c: a sixth line segment; 85: a third endpoint; 86: a fourth endpoint; 88: a first screw hole; 89: a first moving part; 90: a second screw hole; 91: a second moving part; c1: a first interval; c2: a second interval; c3: a third interval; c4: a fourth interval; c5: a fifth interval; c5: a sixth interval; d1: a first direction; d2: a second direction; dc: a direction of conveyance; y: a depth direction; z: the vertical direction.

Detailed Description

Hereinafter, an embodiment of a head lifting device, a method of controlling the head lifting device, a program, and a method of manufacturing the head lifting device will be described with reference to the drawings. The head lifting device of the present embodiment is provided in the liquid ejecting apparatus. The liquid ejecting apparatus is, for example, an ink jet printer that ejects ink as an example of liquid onto a medium such as paper and performs printing.

In the drawing, the liquid ejection device 11 is placed on a horizontal plane, and the direction of gravity is shown by the Z-axis and the direction along the horizontal plane is shown by the X-axis and the Y-axis. The X, Y and Z axes are mutually orthogonal. In the following description, a direction parallel to the Y axis is also referred to as a depth direction Y, and a direction parallel to the Z axis is also referred to as a vertical direction Z.

As shown in fig. 1, the liquid ejecting apparatus 11 may include a housing 12, a medium storage unit 14 capable of storing a medium 13, and a feeding unit 15 for feeding the medium 13. The liquid ejecting apparatus 11 may include a conveying unit 17 that conveys the medium 13 along a conveying path 16 indicated by a dashed-dotted line in the drawing, and a stacker 18 that receives the medium 13. The conveyance path 16 is a path connecting the medium storage 14 and the stacker 18.

The liquid ejecting apparatus 11 includes a liquid ejecting head 19 that ejects liquid and a head lifting device 20 that moves the liquid ejecting head 19. The head lifting device 20 may include a cap 21 that covers the nozzle surface 19a of the liquid ejecting head 19.

The medium housing section 14 can house a plurality of media 13 in a stacked state. The liquid ejecting apparatus 11 may include a plurality of medium storage units 14 and the same number of feeding units 15 as the number of medium storage units 14. The feeding unit 15 may include a feeding roller 23 that feeds the media 13 stored in the media storage unit 14, and a separating unit 24 that separates the media 13 one by one. The feeding unit 15 feeds the medium 13 stored in the medium storage unit 14 to the conveyance path 16.

The conveying unit 17 may include a conveying roller 26, an endless conveying belt 27, and a pair of pulleys 28 on which the conveying belt 27 is mounted. The conveying unit 17 may include a plurality of conveying rollers 26. The conveyance roller 26 rotates while nipping the medium 13, thereby conveying the medium 13.

The conveyor belt 27 has a conveying surface 27a for conveying the medium 13. The conveyance surface 27a is a flat surface of the outer peripheral surface of the output belt 27, which supports the medium 13 by, for example, electrostatic adsorption. The conveying surface 27a of the conveyor belt 27 may be inclined with respect to the horizontal plane, and in the present embodiment, the direction along the conveying surface 27a and in which the medium 13 is conveyed is referred to as a conveying direction Dc. The transport belt 27 runs around while supporting the medium 13 on the transport surface 27a, thereby transporting the medium 13 in the transport direction Dc.

The liquid ejecting head 19 has a nozzle surface 19a, and a nozzle 30 for ejecting liquid opens on the nozzle surface 19 a. The nozzle surface 19a is formed by a nozzle plate in which the nozzles 30 are opened. The liquid ejecting head 19 ejects liquid from the nozzles 30 and performs printing on the medium 13 supported by the conveyor belt 27. The liquid ejecting head 19 of the present embodiment is of a line type capable of ejecting liquid in the entire width direction of the medium 13. The liquid ejecting head 19 is attached to the head lifting device 20 so that the longitudinal direction of the liquid ejecting head 19 coincides with the depth direction Y.

The liquid discharge device 11 includes a control unit 32 that controls various operations performed by the liquid discharge device 11. The control unit 32 is configured by a processing circuit including a computer and a memory, for example, and controls the liquid ejecting head 19, the head lifting device 20, the feeding unit 15, the conveying unit 17, and the like according to a program stored in the memory.

As shown in fig. 2, the liquid ejecting head 19 may include a first front protrusion 35 and a second front protrusion 36 protruding forward from the front surface 34 in the depth direction Y, and a first rear protrusion 38 and a second rear protrusion 39 protruding rearward from the rear surface 37 in the depth direction Y. The first front projection 35, the second front projection 36, the first rear projection 38, and the second rear projection 39 are examples of projections provided on the liquid ejecting head 19. That is, the liquid ejecting head 19 of the present embodiment may be provided with four protrusions. The first front projection 35, the second front projection 36, the first rear projection 38, and the second rear projection 39 may have rotatable rollers or rollers, or may have bearings.

The first front protrusion 35 and the second front protrusion 36 are arranged apart from each other in the first direction D1. The first direction D1 of the present embodiment includes a component in a direction perpendicular to the nozzle plate, and is a direction perpendicular to the conveyance surface 27 a. Further, the first direction D1 includes a component in the vertical direction and a component in the horizontal direction. The first rear protrusion 38 and the second rear protrusion 39 are arranged apart from each other in the first direction D1. The liquid ejecting head 19 may have a lateral protrusion 41 protruding from the side surface 40 in the transport direction Dc. The liquid ejecting head 19 may have a plurality of lateral protrusions 41 arranged in the depth direction Y.

As shown in fig. 3, the head lifting device 20 may include a wiper 43 that wipes the nozzle surface 19a of the liquid ejecting head 19. The head lifting device 20 includes a lifting mechanism 44 for moving the liquid ejecting head 19 in the first direction D1, a frame 45 for supporting the lifting mechanism 44, and an adjusting member 46 for moving the lifting mechanism 44 relative to the frame 45. The first direction D1 is a direction in which the liquid ejecting head 19 is raised and lowered.

The frame 45 may also have a front wall 48, a rear wall 49, and a beam 50 connecting the front wall 48 and the rear wall 49. The front wall 48 and the rear wall 49 are walls parallel to the X axis and the Z axis, respectively, and are arranged to be spaced apart from each other in the depth direction Y. When the frame 45 has a plurality of beams 50, the twisting of the front wall 48 and the rear wall 49 can be reduced. The frame 45 accommodates the liquid ejecting head 19 inside the frame 45 between the rear wall 49 and the front wall 48 in the depth direction Y. The elevating mechanism 44 may be provided inside the frame 45.

The adjustment member 46 may include first to third screws 52a to 52c provided outside the frame 45 in the depth direction Y. The elevating mechanism 44 may be moved relative to the frame 45 by screwing the first to third screws 52a to 52 c. The adjustment member 46 of the present embodiment is provided on the front wall 48. The adjustment member 46 is aligned in the depth direction Y with respect to the front surface cover 12a of the housing 12. The first to third screws 52a to 52c may be covered with the front cover 12a in a closed state, and may be exposed to the outside by opening the front cover 12 a.

The lifting mechanism 44 may also have a rail 54 supported by the frame 45. The guide rail 54 of the present embodiment includes a front guide rail 54a provided on the front wall 48 and a rear guide rail 54b provided on the rear wall 49.

The lifting mechanism 44 may include a first shaft 56 supported by the front wall 48 and the rear wall 49, and a cam 57 fixed to the first shaft 56. The lifting mechanism 44 may also have a second shaft 58 supported by the front wall 48 and the rear wall 49, and a drive gear 59 fixed to the second shaft 58. The lifting mechanism 44 may include a plurality of cams 57 and a drive gear 59.

As shown in fig. 4, a through hole 49a for allowing the wiper 43 to move may be formed in the rear wall 49. The liquid ejecting apparatus 11 may include a wiper moving mechanism (not shown) that reciprocates the wiper 43 along the Y axis. As shown in fig. 3, the wiper 43 has a standby position outside the frame 45 and behind the rear wall 49 in the depth direction Y. The wiper 43 moves in the depth direction Y from the standby position shown in fig. 3, passes through the through hole 49a, enters the inside of the frame 45, and wipes the nozzle surface 19 a.

The cover 21 is provided inside the frame 45 in the depth direction Y. The cap 21 has a retracted position shown in fig. 4 and a capping position shown in fig. 12. The liquid ejecting apparatus 11 may include a cap moving mechanism (not shown) for moving the cap 21 between the retreat position and the capping position.

The elevating mechanism 44 may have a rack 61 engaged with the driving gear 59, and a spring 62 provided between the rack 61 and the liquid ejecting head 19. The rack 61 relatively moves in the first direction D1 with respect to the drive gear 59 as the drive gear 59 rotates. The liquid ejecting head 19 moves together with the rack 61. The first direction D1 is a direction in which the liquid ejecting head 19 is separated from the conveyance surface 27a, and the first direction D1 in the present embodiment is a direction perpendicular to the conveyance surface 27 a. Specifically, the rack 61 and the liquid ejecting head 19 are moved in the first direction D1 by the forward rotation of the drive gear 59, and moved in the direction opposite to the first direction D1 by the reverse rotation of the drive gear 59 so as to approach the conveying surface 27 a.

The rear rail 54b has a first rear guide portion 64 and a second rear guide portion 65. The first rear guide portion 64 guides the first rear protrusion 38 in the first direction D1. The second rear guide portion 65 guides the second rear protrusion 39 in the first direction D1.

As shown in fig. 5, the front rail 54a has a first front guide 67 and a second front guide 68. The first front guide 67 guides the first front protrusion 35 in the first direction D1. The second front guide 68 guides the second front protrusion 36 in the first direction D1. In other words, the first direction D1 is a direction in which the liquid ejecting head 19 is guided by the guide rail 54, and is a direction in which the guide rail 54 extends.

The first front guide 67 may include a first movable rail 70 as an example of a movable rail and a first fixed rail 71 as an example of a fixed rail. The second front guide 68 may have a second movable rail 72 as an example of a movable rail and a second fixed rail 73 as an example of a fixed rail. The first fixed rail 71 and the second fixed rail 73 are fixed to the frame 45. The adjustment member 46 moves the first movable rail 70 and the second movable rail 72 relative to the frame 45. The adjustment member 46 of the present embodiment can move the first movable rail 70 and the second movable rail 72 independently.

When the driving gear 59 rotates in reverse, the liquid ejecting head 19 moves along the guide rail 54 to approach the transport surface 27a, and the lateral protrusions 41 come into contact with the cams 57 to be restricted from moving. The liquid ejecting head 19 may eject liquid onto the medium 13 being conveyed and perform printing in a state where the first front protrusion 35 is held at the first position shown in fig. 5 in the first movable rail 70 and the second front protrusion 36 is held at the first position shown in fig. 5 in the second movable rail 72.

The liquid ejection head 19 adjusts the position in the first direction D1 by rotation of the cam 57. That is, when the cam 57 is rotated in the state shown in fig. 5 in which the first front projection 35 and the second front projection 36 are positioned at the first position, the liquid ejecting head 19 is pressed by the cam 57 and moves in the first direction D1. Specifically, the liquid ejecting head 19 moves between a first printing position shown in fig. 5 and a second printing position shown in fig. 6. The distance between the nozzle surface 19a and the transport surface 27a is adjusted by the movement of the liquid ejecting head 19. The movement of the liquid ejection head 19 is allowed by the spring 62. Therefore, the rotation of the cam 57 is performed in a state where the drive gear 59 is stopped, and the rack 61 is not moved. Further, the position of the liquid ejecting head 19 in the first direction D1 in the state where the side projection 41 abuts on the cam 57 may be adjusted by rotating the cam 57 in the state where the side projection 41 does not abut on the cam 57.

As shown in fig. 6, the liquid ejecting head 19 may eject liquid onto the transported medium 13 and perform printing in a state where the first front protrusion 35 is held at the second position shown in fig. 6 in the first movable rail 70 and the second front protrusion 36 is held at the second position shown in fig. 6 in the second movable rail 72. The nozzle surface 19a of the liquid ejecting head 19 in which the first front projection 35 and the second front projection 36 are held at the first position may be parallel to the nozzle surface 19a of the liquid ejecting head 19 in which the first front projection 35 and the second front projection 36 are held at the second position.

In the present embodiment, the first movable rail 70 and the second movable rail 72 have the same configuration, and the connecting portion between the first movable rail 70 and the first fixed rail 71 and the connecting portion between the second movable rail 72 and the second fixed rail 73 have the same configuration. Therefore, in the following description, the first movable rail 70 and the first fixed rail 71 are described, and the same reference numerals are given to the common structures, and redundant description is omitted.

As shown in fig. 7, the first movable rail 70 and the first fixed rail 71 may have an upper wall 76 and a lower wall 77 that form a movement path 75 through which the first front protrusion 35 moves. In the first movable rail 70, a second interval C2 between the upper wall 76 and the lower wall 77 at a second end 70b opposite to the first end 70a may be larger than a first interval C1 between the upper wall 76 and the lower wall 77 at the first end 70a of the moving path 75. The second end 70b is adjacent to the first stationary rail 71.

The first virtual line 79, which is an example of a virtual line shown by a one-dot chain line in fig. 7 and formed by connecting the center of the upper wall 76 and the lower wall 77 in the second direction D2 from the first end 70a to the second end 70b of the first movable rail 70, includes a first line segment 79a, a second line segment 79b, and a third line segment 79 c. A first line segment 79a is parallel to the lower wall 77 and connects the first end 70a to the first end point 81. The second line 79b connects the first end point 81 and the second end point 82. A third line segment 79c is parallel to the lower wall 77 and connects the second end 82 to the second end 70 b.

In the second direction D2, the third spacing C3 of the first end point 81 from the lower wall 77 is half of the first spacing C1. In the second direction D2, the fourth spacing C4 of the second end point 82 from the lower wall 77 is half the second spacing C2. The fourth interval C4 is greater than the third interval C3.

The third end 71a of the first fixed rail 71 is adjacent to the first movable rail 70. The second virtual line 84 passing through the centers of the upper wall 76 and the lower wall 77 in the second direction D2 includes a fourth line segment 84a, a fifth line segment 84b, and a sixth line segment 84 c. A fourth line segment 84a is parallel to the lower wall 77 and connects the third end 71a and the third endpoint 85. A fifth line segment 84b connects the third end point 85 with the fourth end point 86. A sixth line segment 84c is a line segment that is parallel to the lower wall 77 through a fourth end point 86. In the second direction D2, the fifth interval C5 of the third end point 85 from the lower wall 77 is greater than the sixth interval C6 of the fourth end point 86 from the lower wall 77.

As shown in fig. 6, the adjustment member 46 moves the first movable rail 70 and the second movable rail 72 in a second direction D2 different from the first direction D1 with respect to the frame 45. The rack 61 is also moved in the second direction D2 together with the liquid ejecting head 19 by the movement of the first movable rail 70 and the second movable rail 72. That is, the adjusting member 46 may change the position of the rack 61 with respect to the drive gear 59 to the second direction D2. The teeth of the rack 61 of the present embodiment face in the second direction D2. The maximum changing amount of the adjusting member 46 for changing the position of the rack 61 may be shorter than the maximum length of the teeth of the rack 61. The second direction D2 of the present embodiment is the direction opposite to the conveyance direction Dc.

As shown in fig. 8 and 9, the front wall 48 may have a first support portion 48a that rotatably supports the first screw 52 a. The adjustment member 46 may have a first moving portion 89 formed with a first screw hole 88 to be screwed with the first screw 52 a. The first moving portion 89 moves relative to the first support portion 48a by the rotation of the first screw 52 a. The amount of movement of the first moving portion 89 is determined by the amount of rotation of the first screw 52 a. The first moving portion 89 may be biased to the side where the distance from the first support portion 48a is increased or decreased by a spring, not shown, and the first screw 52a may move the first moving portion 89 against the spring force of the spring. The first moving portion 89 may be restricted from moving in the first direction D1 by a protrusion provided on the front wall 48.

The first movable rail 70 is fixed to the first moving portion 89. The first screw 52a is rotated leftward, and the first movable rail 70 and the first moving portion 89 are moved in the second direction D2. The first screw 52a is rotated rightward, and the first movable rail 70 and the first moving portion 89 move in the direction opposite to the second direction D2. Specifically, the first movable rail 70 and the first moving portion 89 are movable between a first rail adjustment position shown in fig. 8 and a second rail adjustment position shown in fig. 9. Similarly, the second movable rail 72 is moved in the second direction D2 or a direction opposite to the second direction D2 by the rotation of the third screw 52 c.

As shown in fig. 10 and 11, the front wall 48 may have a second support portion 48b that supports the second screw 52 b. The adjustment member 46 may have a second moving portion 91 formed with a second screw hole 90 to be screwed with the second screw 52 b. The second moving portion 91 moves relative to the second support portion 48b by the rotation of the second screw 52 b. The amount of movement of the second moving portion 91 is determined by the amount of rotation of the second screw 52 b.

The tip of the first shaft 56 is fixed to the second moving portion 91. The second screw 52b is rotated rightward, and the tip of the first shaft 56 and the second moving portion 91 move in the first direction D1. The second screw 52b is rotated leftward, so that the front end of the first shaft 56 and the second moving portion 91 move in the direction opposite to the first direction D1. Specifically, the tip of the first shaft 56 and the second moving portion 91 are movable between a first shaft adjustment position shown in fig. 10 and a second shaft adjustment position shown in fig. 11.

The operation of the present embodiment will be described.

The method of manufacturing the head lifting device 20 includes: an adjustment step of moving the lifting mechanism 44 in the second direction D2 with respect to the frame 45; and a mounting step of mounting the liquid ejecting head 19 to the elevating mechanism 44 after the adjusting step. In the adjustment step, the long-side adjustment step, the height adjustment step, and the tilt adjustment step may be performed in this order.

The adjustment process may be performed by attaching a dummy head, not shown, to the frame 45 instead of the liquid ejecting head 19. The dummy head has no structure for ejecting liquid from the nozzles 30, but has the same outer shape as the liquid ejecting head 19. Therefore, the same reference numerals as those of the liquid ejecting head 19 are given, and the structure of the dummy head will be described. That is, the dummy head has a first front projection 35, a second front projection 36, a first rear projection 38, a second rear projection 39, and a lateral projection 41 which are provided in the same size and the same arrangement as the liquid ejection head 19. When the dummy head is attached to the head lifting device 20, the first front protrusion 35, the second front protrusion 36, the first rear protrusion 38, the second rear protrusion 39, and the lateral protrusion 41 are held by the first front guide 67, the second front guide 68, the first rear guide 64, the second rear guide 65, and the cam 57, respectively.

In the long-side adjustment step, the adjustment member 46 moves the first movable rail 70 relative to the first rear guide 64. Specifically, the operator makes the adjustment as follows: the first movable rail 70 is moved in the second direction D2 or the direction opposite to the second direction D2 by rotating the first screw 52a, which is an example of a screw, and the longitudinal direction of the mock head is parallel to the Y axis as viewed from the first direction D1.

In the long-side adjustment step, the first rear guide portion 64 functions as a reference member that supports the liquid ejecting head 19, and the first movable rail 70 functions as a movable member that supports the liquid ejecting head 19 and is movable relative to the frame 45. The first rear guide portion 64 and the first movable rail 70 are provided separately in the longitudinal direction of the liquid ejecting head 19, that is, the depth direction Y.

In the height adjustment step, the front end of the first shaft 56 supported by the front wall 48 is moved with reference to the rear end of the first shaft 56 supported by the rear wall 49. Specifically, the operator makes the adjustment as follows: by rotating the second screw 52b, the tip of the first shaft 56 is moved in the first direction D1 or the direction opposite to the first direction D1, and the distance between the transport surface 27a and the nozzle surface 19a is made equal over the entire longitudinal direction of the dummy head.

In the inclination adjustment step, the adjustment member 46 moves the second movable rail 72 relative to the first movable rail 70. Specifically, the operator makes the adjustment as follows: the second movable rail 72 is moved in the second direction D2 or the direction opposite to the second direction D2 by rotating the third screw 52c, which is an example of a screw, so that the first front protrusion 35 and the second front protrusion 36 are aligned in the first direction D1.

In the tilt adjustment step, the first movable rail 70 functions as a reference member for supporting the liquid ejecting head 19, and the second movable rail 72 functions as a movable member movable relative to the frame 45. The first movable rail 70 and the second movable rail 72 are separately provided in the first direction D1.

When the adjustment process is completed, the operator performs a mounting process of replacing the dummy head with the liquid ejecting head 19. That is, the operator removes the dummy head from the elevating mechanism 44 while maintaining the positions of the first movable rail 70, the second movable rail 72, and the first shaft 56, and attaches the liquid ejecting head 19 to the elevating mechanism 44.

Next, switching between printing and non-printing will be described.

As shown in fig. 12, in the non-printing mode in which printing is not performed, the liquid ejecting head 19 is positioned at the standby position shown in fig. 12, and is capped by the cap 21 positioned at the capping position. In a state where the liquid ejecting head 19 is located at the standby position, the first front projection 35 is held by the first fixed rail 71, and the second front projection 36 is held by the second fixed rail 73. That is, the cover 21 covers the nozzle surface 19a of the liquid ejecting head 19 in a state where the first front protrusion 35 is held by the first fixed rail 71 and the second front protrusion 36 is held by the second fixed rail 73.

As shown in fig. 13, when printing is performed, the control unit 32 rotates the drive gear 59 in the forward direction to move the liquid ejecting head 19 in the first direction D1. The liquid ejecting head 19 moves from the standby position to the distant position shown in fig. 13, and is separated from the cover 21. The first front projection 35 of the liquid ejection head 19 located at the distant position is held on the first fixed rail 71, and the second front projection 36 is held on the second fixed rail 73.

Next, as shown in fig. 5, the controller 32 moves the cover 21 to the retracted position. The control unit 32 moves the liquid ejecting head 19 in the direction opposite to the first direction D1 by rotating the drive gear 59 in reverse. The liquid ejecting head 19 moves from the distant position to the transport surface 27a, and stops at a position where the lateral protrusion 41 contacts the cam 57. In a state where the lateral protrusion 41 is in contact with the cam 57, the first front protrusion 35 is held to the first movable rail 70, and the second front protrusion 36 is held to the second movable rail 72. That is, the controller 32 continuously moves the liquid ejecting head 19 along the first fixed rail 71 and the second fixed rail 73 and moves the liquid ejecting head 19 along the first movable rail 70 and the second movable rail 72. Accordingly, the control method of the head lifting device 20 includes: a first moving step of moving the liquid ejecting head 19 along the first fixed rail 71 and the second fixed rail 73; and a second moving step of moving the liquid ejecting head 19 along the first movable rail 70 and the second movable rail 72 continuously from the first moving step.

As shown in fig. 13, when printing is completed, the control unit 32 rotates the drive gear 59 in the forward direction to move the liquid ejecting head 19 from the printing position to the remote position. At this time, the controller 32 moves the liquid ejecting head 19 along the first movable rail 70 and the second movable rail 72, and then moves the liquid ejecting head 19 along the first fixed rail 71 and the second fixed rail 73.

After that, as shown in fig. 12, the controller 32 moves the cap 21 to the capping position with the liquid ejecting head 19 positioned at the remote position. The controller 32 moves the liquid ejecting head 19 to the standby position with the cap 21 positioned at the capping position, and caps the liquid ejecting head 19 with the cap 21.

Next, a case of performing wiping will be described.

As shown in fig. 14, the control unit 32 rotates the drive gear 59 to position the liquid ejecting head 19 at the wiping position. The wiping position is a position between the printing position and the standby position in the first direction D1. When the liquid ejection head 19 is located at the wiping position, the first front projection 35 is located on the first fixed rail 71, and the second front projection 36 is located on the second fixed rail 73. The controller 32 moves the wiper 43 in the depth direction Y, and wipes the nozzle surface 19a with the wiper 43. Therefore, the wiper 43 wipes the nozzle surface 19a of the liquid ejecting head 19 in a state where the first front protrusion 35 is held by the first fixed rail 71 and the second front protrusion 36 is held by the second fixed rail 73.

The effects of the present embodiment will be described.

(1) The elevating mechanism 44 moves the liquid ejecting head 19 in the first direction D1 in which the liquid ejecting head 19 is elevated. The adjustment member 46 moves the lift mechanism 44 in the second direction D2. That is, the adjustment member 46 moves the liquid ejecting head 19 in the second direction D2 via the elevating mechanism 44. Therefore, the position of the liquid ejecting head 19 in the first direction D1 can be adjusted by the elevating mechanism 44, and the position of the liquid ejecting head 19 in the second direction D2 can be adjusted by the adjusting member 46, so that the position of the liquid ejecting head 19 can be easily adjusted in a plurality of directions.

(2) The guide rail 54 that guides the first front projection 35, the second front projection 36, the first rear projection 38, and the second rear projection 39 provided on the liquid ejecting head 19 is supported by the frame 45. Thus, for example, the length of the guide rail 54 can be made longer than in the case where the guide rail 54 is provided on the liquid ejecting head 19 and the projection is provided on the frame 45. The distance that the liquid ejecting head 19 can move is determined by the length of the guide rail 54. Therefore, the moving distance of the liquid ejecting head 19 can be extended.

(3) The adjustment member 46 moves the first movable rail 70 and the second movable rail 72 relative to the frame 45. Therefore, the position of the liquid ejecting head 19 can be easily adjusted as compared with a case where the adjusting member 46 moves the entire guide rail. For example, by holding the liquid ejecting head 19 by the first movable rail 70 and the second movable rail 72 during printing and holding the liquid ejecting head 19 by the first fixed rail 71 and the second fixed rail 73 during capping and wiping, it is possible to easily perform adjustment by the adjusting member 46 and perform printing on the medium 13 with high quality.

(4) The second interval C2 of the second end 70b of the first movable rail 70 adjacent to the first fixed rail 71 is greater than the first interval C1 of the first end 70 a. Therefore, the first front projection 35 can be smoothly moved between the first movable rail 70 and the first fixed rail 71.

(5) The first direction D1 includes a component in the horizontal direction. Therefore, the projection of the liquid ejection head 19 is easily moved along the lower wall 77 of the upper wall 76 and the lower wall 77. The first and third segments 79a, 79C are parallel to the lower wall 77, and the fourth spacing C4 of the second end point 82 from the lower wall 77 is greater than the third spacing C3 of the first end point 81 from the lower wall 77. Therefore, the lower wall 77 can be formed more gently than the upper wall 76, and the vibration of the liquid ejecting head 19 moving along the lower wall 77 can be reduced.

(6) The liquid ejecting head 19 can eject liquid onto the medium 13 at a plurality of positions within the first movable rail 70. Therefore, the result of the adjustment by the adjustment unit 46 can be used in a plurality of print modes.

(7) The liquid ejecting head 19 ejects the liquid in a state where the medium 13 is parallel to the nozzle surface 19a, and thus can print on the medium 13 with higher quality than a case where the liquid is ejected in a non-parallel state. Even if the liquid ejecting head 19 moves in the first movable rail 70, the nozzle surfaces 19a are maintained parallel. Therefore, since the result adjusted in the adjusting step can be used even when the liquid ejecting head 19 moves within the first movable rail 70, it is possible to suppress a decrease in print quality even when the liquid ejecting head 19 ejects liquid onto the medium 13 at a plurality of positions.

(8) Since the liquid ejecting head 19 moves on the first movable rail 70 and the first fixed rail 71, the moving distance of the liquid ejecting head 19 can be extended as compared with the case where the liquid ejecting head moves only on the first movable rail 70. Therefore, the liquid ejecting head 19 can be easily separated from the position where the liquid is ejected to the medium 13. The cover 21 covers the nozzle surface 19a of the liquid ejecting head 19 held by the first fixed rail 71 and the second fixed rail 73. Therefore, a space for the cap 21 to cover the nozzle face 19a can be easily secured.

(9) The wiper 43 wipes the nozzle surface 19a of the liquid ejecting head 19 held by the first fixed rail 71 and the second fixed rail 73. Therefore, a space for the wiper 43 to wipe the nozzle face 19a can be easily secured.

(10) Since the rack 61 moves in the first direction D1, the liquid ejecting head 19 can be easily moved in the first direction D1 by providing the rack 61 to the liquid ejecting head 19. Since the teeth of the rack 61 face in the second direction D2, even if the adjustment member 46 changes the position of the rack 61 in the second direction D2, the possibility of disengagement of the drive gear 59 and the rack 61 can be reduced.

(11) Since the maximum changing amount of the adjusting member 46 for changing the position of the rack 61 is shorter than the maximum length of the teeth of the rack 61, the possibility of disengagement of the drive gear 59 and the rack 61 can be reduced.

(12) The adjustment member 46 moves the movable member relative to the reference member. Therefore, the adjustment member 46 can adjust the position of the liquid ejecting head 19 by moving the liquid ejecting head 19 in the circumferential direction around the reference member.

(13) The first rear guide portion 64 and the first movable rail 70 are provided separately in the longitudinal direction of the liquid ejecting head 19. Therefore, the adjustment member 46 can adjust the inclination of the liquid ejecting head 19 in the longitudinal direction by moving the first movable rail 70 relative to the first rear guide portion 64.

(14) The first movable rail 70 and the second movable rail 72 are separately provided in the first direction D1. Therefore, the adjustment member 46 can adjust the inclination of the liquid ejecting head 19 with respect to the first direction D1 by moving the second movable rail 72 with respect to the first movable rail 70.

(15) The adjustment member 46 is provided outside the frame 45. Therefore, for example, when the head lifting device 20 is disposed at a position exposed by opening the front surface cover 12a provided on the housing 12, even when the head lifting device 20 is housed in the housing 12, the position of the liquid ejecting head 19 can be easily adjusted from outside the housing 12.

(16) The elevating mechanism 44 is moved relative to the frame 45 by screwing the first to third screws 52a to 52c provided on the outer side of the frame 45. Therefore, the position of the elevating mechanism 44 can be easily adjusted from the outside of the frame 45.

(17) The head lifting device 20 performs the second moving step continuously with the first moving step. Therefore, the liquid ejecting head 19 can be moved by a longer distance than in the case where only one of the first moving step and the second moving step is performed.

(18) After the adjustment step of adjusting the position of the elevating mechanism 44, the liquid ejecting head 19 is attached to the adjustment member 46. Therefore, for example, even when the liquid ejecting head 19 is replaced, the liquid ejecting head 19 can be easily replaced without moving the elevating mechanism 44.

(19) The adjustment member 46 is aligned with the front surface cover 12a of the housing 12 in the depth direction Y, and is exposed to the outside by opening the front surface cover 12 a. Therefore, even after the head lifting device 20 is assembled to the liquid ejecting apparatus 11, the position of the liquid ejecting head 19 can be adjusted by operating the adjusting member 46 from the front of the liquid ejecting apparatus 11.

This embodiment can be modified as follows. The present embodiment and the following modifications can be combined and implemented within a range not technically contradictory to each other.

In the first direction D1, the length of the guide rail 54 may be longer than the length of the liquid ejecting head 19. Thereby, the liquid ejecting head 19 can move in the first direction D1 by a distance longer than its own length.

The liquid ejecting apparatus 11 may include a driving unit that rotates the first screw 52a to the third screw 52c, respectively. The control unit 32 may control the driving of the driving unit to rotate the first to third screws 52a to 52c individually.

The adjustment member 46 may adjust the position of the lifting mechanism 44 by rotating the cam.

The liquid ejecting apparatus 11 may be configured such that the elevating mechanism 44 whose position is adjusted by the adjusting member 46 is fixed to the frame 45 by, for example, screws.

The adjustment member 46 may be provided inside the frame 45.

The adjustment member 46 may be provided on the rear wall 49.

The adjustment member 46 may adjust the position of at least one of the first front protrusion 35, the second front protrusion 36, the first rear protrusion 38, and the second rear protrusion 39.

The rack 61 may be fixed to the frame 45, and the drive gear 59 may be fixed to the liquid ejecting head 19.

The maximum changing amount of the adjusting member 46 for changing the position of the rack 61 may be equal to or larger than the maximum length of the teeth of the rack 61. The adjusting member 46 may also adjust the position of the driving gear 59 in conjunction with the position of the rack 61.

The teeth of the rack 61 may also face in a different direction than the second direction D2. For example, the rack 61 may be changed in angle in accordance with the position in the second direction D2 of the liquid ejecting head 19.

The elevating mechanism 44 may move the liquid ejecting head 19 by fixing the liquid ejecting head 19 to an endless belt and circulating the belt. The lifting mechanism 44 may be moved to lift the liquid ejecting head 19 using a hoist, for example. The lifting mechanism 44 may be moved to push up the liquid ejecting head 19 using a jack, for example.

The adjustment member 46 may move the entire guide rail 54 in the second direction D2. That is, the guide rail 54 may be integrally formed by a movable guide rail.

The wiper 43 may wipe the nozzle surface 19a of the liquid ejecting head 19 with the first front projection 35 and the second front projection 36 held by the movable rail.

The cover 21 may cover the nozzle surface 19a of the liquid ejecting head 19 in a state where the first front projection 35 and the second front projection 36 are held by the movable rail.

The nozzle surface 19a of the liquid ejecting head 19 at the first position where the first front projection 35 is held in the first movable rail 70 may not be parallel to the nozzle surface 19a of the liquid ejecting head 19 at the second position where the first front projection 35 is held in the first movable rail 70.

The fourth spacing C4 of the second end point 82 from the lower wall 77 may also be below the third spacing C3 of the first end point 81 from the lower wall 77.

The first interval C1 between the upper wall 76 and the lower wall 77 at the first end 70a of the first movable rail 70 may be equal to or greater than the second interval C2 between the upper wall 76 and the lower wall 77 at the second end 70 b.

At least a portion of the guide rail 54 may also be curved. At least a portion of the rail 54 may also be bent.

The guide rail 54 may be provided to the liquid ejecting head 19. The first front protrusion 35, the second front protrusion 36, the first rear protrusion 38, and the second rear protrusion 39 may be provided on the frame 45.

The liquid ejecting apparatus 11 may be a liquid ejecting apparatus that ejects or ejects liquid other than ink. The state of the liquid discharged from the liquid discharge device as a minute amount of droplets includes a granular state, a tear-drop state, and a state in which a tail is pulled out in a linear state. The liquid referred to herein may be any material that can be ejected from the liquid ejecting apparatus. For example, the liquid may be in a state of a substance in a liquid phase, and includes a liquid having a relatively high or low viscosity, a sol, gel water, other inorganic solvents, organic solvents, a solution, a liquid resin, a liquid metal, and a fluid such as a molten metal. The liquid includes not only a liquid as one state of a substance but also a liquid in which particles of a functional material composed of a solid substance such as a pigment or metal particles are dissolved, dispersed, or mixed in a solvent, and the like. Typical examples of the liquid include the ink and the liquid crystal described in the above embodiments. The ink includes various liquid compositions such as general water-based ink, oil-based ink, gel ink, and hot-melt ink. Specific examples of the liquid ejecting apparatus include the following: a liquid containing materials such as electrode materials and coloring materials used in the manufacture of liquid crystal displays, electroluminescence displays, surface-emitting displays, color filters, and the like in a dispersed or dissolved form is discharged. The liquid ejecting apparatus may be as follows: a device for ejecting a biological organic material used for manufacturing a biochip; a device for ejecting a liquid as a sample, the device being used as a precision pipette; printing devices, micro-dispensers, etc. The liquid ejection device may also be a device such as: a device for accurately ejecting lubricating oil to a precision machine such as a timepiece or a camera; a device for ejecting a transparent resin liquid such as an ultraviolet curing resin onto a substrate in order to form a micro hemispherical lens, an optical lens, or the like used for an optical communication element or the like. The liquid ejecting apparatus may eject an etching liquid such as an acid or an alkali for etching a substrate or the like.

The technical idea and the operational effects thereof grasped from the above-described embodiment and modification are described below.

(A) The head lifting device is provided with: an elevating mechanism for moving a liquid ejecting head that ejects liquid in a first direction in which the liquid ejecting head is elevated; a frame supporting the lifting mechanism; and an adjustment member that moves the lifting mechanism in a second direction different from the first direction with respect to the frame.

According to this configuration, the lifting mechanism moves the liquid ejecting head in the first direction in which the liquid ejecting head is lifted. The adjustment member moves the lifting mechanism in the second direction. That is, the adjustment member moves the liquid ejecting head in the second direction via the elevating mechanism. Therefore, the position of the liquid ejecting head in the first direction can be adjusted by the lifting mechanism, and the position of the liquid ejecting head in the second direction can be adjusted by the adjusting member, so that the position of the liquid ejecting head can be easily adjusted in a plurality of directions.

(B) In the head lifting device, the lifting mechanism may include a guide rail supported by the frame, the guide rail guiding a projection provided on the liquid ejecting head in the first direction.

According to this configuration, the guide rail that guides the projection provided on the liquid ejecting head is supported by the frame. Thus, for example, the length of the guide rail can be increased as compared with a case where the guide rail is provided on the liquid ejecting head and the projection is provided on the frame. The distance that the liquid ejecting head can move is determined by the length of the guide rail. Therefore, the moving distance of the liquid ejecting head can be extended.

(C) In the head lifting device, the guide rail may include a movable guide rail and a fixed guide rail, the fixed guide rail may be fixed to the frame, and the adjustment member may move the movable guide rail relative to the frame.

According to this configuration, the adjustment member moves the movable rail relative to the frame. Therefore, the position of the liquid ejecting head can be easily adjusted as compared with a case where the adjusting member moves the entire guide rail.

(D) In the head lifting device, the first direction may include a component in a horizontal direction, the movable rail may have an upper wall and a lower wall forming a movement path along which the protrusion moves, in the movable rail, a second interval between the upper wall and the lower wall at a second end opposite to a first end of the movement path may be larger than a first interval between the upper wall and the lower wall at the first end, and the second end may be adjacent to the fixed rail.

According to this structure, the second interval of the second end of the movable rail adjacent to the fixed rail is larger than the first interval of the first end. Therefore, the projection can be smoothly moved between the movable rail and the fixed rail.

(E) In the head lifting device, the first direction may also comprise a component in the horizontal direction, the movable rail has an upper wall and a lower wall that form a movement path along which the protrusion moves, and a virtual line formed by connecting a center between the upper wall and the lower wall in the second direction from a first end of the movable rail to a second end opposite to the first end includes a first line segment, a second line segment, and a third line segment, the second end is adjacent to the fixed guide rail, the first line segment connects the first end and a first endpoint in parallel with the lower wall, the second line segment connects the first end point and a second end point, the third line segment connects the second end point and the second end point in parallel with the lower wall, the second end is spaced from the lower wall by a greater distance than the first end.

The first direction includes a component of the horizontal direction. Therefore, the projection of the liquid ejection head is easily moved along the lower wall of the upper and lower walls. According to this structure, the first line segment and the third line segment are parallel to the lower wall, and the interval between the second end point and the lower wall is larger than the interval between the first end point and the lower wall. Therefore, the lower wall can be formed more gently than the upper wall, and the vibration of the liquid ejecting head moving along the lower wall can be reduced.

(F) In the head lifting device, the liquid ejecting head may eject the liquid onto the medium to be transported in each of a state in which the projection is held at a first position and a state in which the projection is held at a second position, the first position and the second position being positions inside the movable rail.

According to this configuration, the liquid ejecting head can eject the liquid onto the medium at a plurality of positions in the movable rail. Therefore, the result of the adjustment by the adjustment means can be used in a plurality of printing modes.

(G) In the head lifting device, the liquid ejecting head may have a nozzle surface on which a nozzle for ejecting the liquid opens, and the nozzle surface of the liquid ejecting head in which the projection is held at the first position may be parallel to the nozzle surface of the liquid ejecting head in which the projection is held at the second position.

The liquid ejecting head ejects liquid in a state where the medium is parallel to the nozzle surface, and thus can print on the medium with higher quality than a case where the liquid is ejected in a state where the medium is not parallel. According to this configuration, even if the liquid ejecting head moves in the movable rail, the nozzle surfaces are maintained parallel. Therefore, even when the liquid ejecting head ejects liquid onto the medium at a plurality of positions, it is possible to suppress a decrease in print quality.

(H) The head lifting device may further include a cover that covers a nozzle surface of the liquid ejecting head in a state where the projection is held by the fixed rail.

Since the liquid ejecting head moves on the movable rail and the fixed rail, the moving distance of the liquid ejecting head can be extended as compared with the case where the liquid ejecting head moves only on the movable rail. Therefore, the liquid ejecting head can be easily separated from the position where the liquid is ejected to the medium. According to this configuration, the cover covers the nozzle surface of the liquid ejecting head held on the fixed rail. Therefore, a space for the cap to cover the nozzle face can be easily secured.

(I) The head lifting device may further include a wiper that wipes a nozzle surface of the liquid ejecting head in a state where the projection is held by the fixed rail.

According to this configuration, the wiper wipes the nozzle surface of the liquid ejecting head held by the fixed rail. Therefore, a space for the wiper to wipe the nozzle face can be easily secured.

(J) In the head lifting device, the lifting mechanism may include a drive gear and a rack engaged with the drive gear, the rack may move relative to the drive gear in the first direction in accordance with rotation of the drive gear, teeth of the rack may face the second direction, and the adjustment member may change a position of the rack relative to the drive gear to the second direction.

According to this configuration, since the rack moves in the first direction, the rack is provided in the liquid ejecting head, and thus the liquid ejecting head can be easily moved in the first direction. Since the teeth of the rack face in the second direction, even if the adjusting member changes the position of the rack in the second direction, the possibility of disengagement of the drive gear and the rack can be reduced.

(K) In the head lifting device, a maximum changing amount by which the adjusting member changes the position of the rack may be shorter than a maximum length of the teeth.

According to this configuration, since the maximum changing amount of the position of the rack by the adjusting member is shorter than the maximum length of the teeth of the rack, the possibility of disengagement of the driving gear and the rack can be reduced.

(L) the head lifting and lowering means may be configured such that the length of the guide rail in the first direction is longer than the length of the liquid ejecting head.

According to this structure, the guide rail is longer than the liquid ejecting head in the first direction D1. Thereby, the liquid ejecting head can move in the first direction by a distance longer than its own length.

(M) in the head lifting and lowering device, the lifting and lowering mechanism may include a reference member supporting the liquid ejecting head, and a movable member supporting the liquid ejecting head and movable with respect to the frame, and the adjusting member may move the movable member with respect to the reference member.

According to this configuration, the adjustment member moves the movable member relative to the reference member. Therefore, the adjustment member moves the liquid ejecting head in the circumferential direction around the reference member, and the position of the liquid ejecting head can be adjusted.

(N) in the head lifting and lowering device, the reference member and the movable member may be provided separately in a longitudinal direction of the liquid ejecting head.

According to this configuration, the reference member and the movable member are provided separately in the longitudinal direction of the liquid ejecting head. Therefore, the adjustment member can adjust the tilt of the liquid ejecting head in the longitudinal direction by moving the movable member relative to the reference member.

(O) in the head lifting and lowering device, the reference member and the movable member may be provided separately in the first direction.

According to this structure, the reference member and the movable member are provided separately in the first direction. Therefore, the adjustment member can adjust the inclination of the liquid ejecting head with respect to the first direction by moving the movable member with respect to the reference member.

(P) in the head lifting device, the adjusting member may be provided outside the frame.

According to this structure, the adjustment member is provided outside the frame. Therefore, for example, when the head lifting device is disposed at a position exposed by opening a cover provided in the case, even when the head lifting device is housed in the case, the position of the liquid ejecting head can be easily adjusted from outside the case.

(P) in the head lifting device, the lifting mechanism may be provided inside the frame, the adjustment member may include a screw provided outside the frame, and the lifting mechanism may be moved relative to the frame by screwing the screw.

According to this configuration, the elevating mechanism is moved relative to the frame by screwing the screw provided on the outer side of the frame. Therefore, the position of the elevating mechanism can be easily adjusted from the outside of the frame.

(R) a method of controlling the head lifting device having the above-described configuration, wherein the lifting mechanism includes a movable rail that is movable relative to the frame and a fixed rail that is fixed to the frame, the method comprising: a first moving step of moving the liquid ejecting head along the fixed rail; and a second moving step of moving the liquid ejecting head along the movable rail continuously with the first moving step.

According to this method, the head lifting device performs the second moving step continuously with the first moving step. Therefore, the liquid ejecting head can be moved by a longer distance than in the case where only one of the first moving step and the second moving step is performed.

(S) the program causes a computer to execute the method for controlling the head lifting device.

According to this method, the same effect as the method of controlling the head lifting device can be obtained.

(T) a method for manufacturing the head lifting device having the above-described configuration, the method for controlling the head lifting device includes: an adjustment step of moving the lifting mechanism in the second direction with respect to the frame; and an attaching step of attaching the liquid ejecting head to the elevating mechanism after the adjusting step.

According to this method, after the adjustment step of adjusting the position of the elevating mechanism, the liquid ejecting head is attached to the adjustment member. Therefore, for example, even when the liquid ejecting head is replaced, the liquid ejecting head can be easily replaced without moving the elevating mechanism.

Claims

1. A head lifting device is characterized by comprising:

a lifting mechanism for moving a liquid ejecting head that ejects liquid in a first direction in which the liquid ejecting head is lifted;

a frame supporting the lifting mechanism; and

and an adjustment member that moves the lifting mechanism in a second direction different from the first direction with respect to the frame.

2. Head lifting device according to claim 1,

the lifting mechanism has a guide rail supported by the frame,

the guide rail guides a projection provided to the liquid ejecting head in the first direction.

3. Head lifting device according to claim 2,

the guide rail has a movable guide rail and a fixed guide rail,

the fixed guide rail is fixed to the frame,

the adjustment member moves the movable rail relative to the frame.

4. Head lifting device according to claim 3,

the first direction comprises a component of the horizontal direction,

the movable rail has an upper wall and a lower wall forming a moving path for the protrusion to move,

a second interval of the upper wall from the lower wall at a second end opposite to the first end is larger than a first interval of the upper wall from the lower wall at the first end of the moving path in the movable rail,

the second end is adjacent to the fixed rail.

5. Head lifting device according to claim 3 or 4,

the first direction comprises a component of the horizontal direction,

a virtual line formed by connecting the center between the upper wall and the lower wall in the second direction from a first end of the movable rail to a second end opposite to the first end includes a first line segment, a second line segment, and a third line segment,

the second end is adjacent to the fixed guide rail,

the first line segment connects the first end and a first endpoint in parallel with the lower wall,

the second line segment connects the first end point and a second end point,

the third line segment connects the second end point and the second end in parallel with the lower wall,

the second end is spaced from the lower wall by a greater distance than the first end.

6. Head lifting device according to claim 3,

the liquid ejecting head ejects the liquid to a medium to be transported in each of a state where the projection is held at the first position and a state where the projection is held at the second position,

the first position and the second position are positions within the movable rail.

7. Head lifting device according to claim 6,

the liquid ejecting head has a nozzle surface on which nozzles for ejecting the liquid are opened,

the nozzle surface of the liquid ejecting head in which the projection is held at the first position is parallel to the nozzle surface of the liquid ejecting head in which the projection is held at the second position.

8. Head lifting device according to claim 3,

the head lifting device is also provided with a cover for covering the nozzle surface of the liquid spray head,

the cover covers the nozzle surface of the liquid ejecting head in a state where the projection is held by the fixed rail.

9. Head lifting device according to claim 3,

the head lifting device is also provided with a wiper for wiping the nozzle surface of the liquid jet head,

the wiper wipes the nozzle surface of the liquid ejecting head with the projection held by the fixed rail.

10. Head lifting device according to claim 2,

the lifting mechanism is provided with a driving gear and a rack meshed with the driving gear,

the rack gear relatively moves in the first direction with respect to the drive gear with rotation of the drive gear,

the teeth of the rack face in the second direction,

the adjustment member changes a position of the rack relative to the drive gear to the second direction.

11. Head lifting device according to claim 10,

the maximum changing amount of the adjusting member for changing the position of the rack is shorter than the maximum length of the teeth.

12. Head lifting device according to claim 2,

the length of the guide rail is longer than the length of the liquid ejection head in the first direction.

13. Head lifting device according to claim 1,

the elevating mechanism has a reference member supporting the liquid ejecting head and a movable member supporting the liquid ejecting head and movable relative to the frame,

the adjustment member moves the movable member relative to the reference member.

14. Head lifting device according to claim 13,

the reference member and the movable member are provided separately in a longitudinal direction of the liquid ejecting head.

15. Head lifting device according to claim 13,

the reference member and the movable member are provided separately in the first direction.

16. Head lifting device according to claim 1,

the adjusting component is arranged on the outer side of the frame.

17. Head lifting device according to claim 1,

the lifting mechanism is arranged at the inner side of the frame,

the adjusting member is provided with a screw provided on the outer side of the frame,

the lifting mechanism is moved relative to the frame by screwing the screw.

18. A method for controlling a head lifting device is characterized in that,

the method of controlling a head lifting device according to any one of claims 1 to 17,

the lifting mechanism has a movable rail that can move relative to the frame and a fixed rail that is fixed to the frame,

the control method of the head lifting device includes:

a first moving step of moving the liquid ejecting head along the fixed rail; and

and a second moving step of moving the liquid ejecting head along the movable rail continuously with the first moving step.

19. A storage medium storing a program,

the program causes a computer to execute the method of controlling a head lifting device according to claim 18.

20. A method of manufacturing a head lifting device, characterized in that,

the method of manufacturing a head lifting device according to any one of claims 1 to 17,

the method of manufacturing the head lifting device includes:

an adjustment step of moving the lifting mechanism in the second direction with respect to the frame; and

and an attaching step of attaching the liquid ejecting head to the elevating mechanism after the adjusting step.